<!DOCTYPE html>
<html>
    <body>
        <style>
          iframe {
            margin: 10px;
            float: left;
            width: 300px;
            height: 300px;
            border: none;
          }
        </style>
        <iframe sandbox="allow-scripts" src="resources/hello-world.html"> </iframe>
        <iframe sandbox="allow-scripts" src="resources/hello-world.html"> </iframe>
    </body>
</html>
